Blade or paddle for mortar-mixers.



J. LAUN. BLADE 0B PADDLE FOR MORTAR MIXERS. APPLIOATION FILED MAY 9, 1910.

967,646. Patented Aug. 16,1910.

- Jmsiils Zen/n.

J'USTUS LATIN, or crushe rnninors'.

amnion on PADDLE ron MORTAR-MIXERS.

Specification of Letters Patent.

Application filed May 9, 1910. Serial No. 560,128.

To all whom it may concern: y

Be it known that I, J us'rus LAUN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Blades or Paddles for Mor-' tar-Mixers, of which the following is a specification.

This invention relates to an improved blade or paddle to be used in mixing machines, such as are employed for mixing mortar and the like. and it consists in certain peculiarities of the construction, novel arrangement, and operation ofthe various parts thereof, as will be hereinafter more fully set forth and specifically claimed.

The principal object of the invention is to provide a blade or paddle of 'the abovenamed character, which shall be simple and inexpensive inconstruction, strong, durable and effective in operation, andso made that it can be placed on, or removed from, the rotary shaft of the machine, without having to remove the same from its bearings, and without interference by other blades or paddles on the said shaft.

Another object is to so construct the blade or paddle that when a number of them are properly mounted on the rotary shaft of the mixing machine, they will not only thoroughly mix and knead the material, but will also act upon it in the manner of a worm c'onveyer, and force it out of the mixing receptacle at one end thereof.

Other objects and advantages of the invention, will be disclosed in the subjoined description and explanation In order to enable others skilled in the art to which this invention pertains, to make and use the same, I will now proceed to describe it, referring to the accompanying drawings, in which Figurel, is an end view partly in section of the mixing receptacle or tron'gh of a mortar mixing machine, mounted therein and equipped-with paddles embodying the invention; Fig. 2, is a plan view thereof; Fig. 3, is a face view of the paddle; Fig. 4;, is aview of one'side thereof; Fig. 5, is a side view in elevation ofthe opposite side of the paddle; Fig. 6, is an end view in elevation when viewed from its free end; Fig. 7, is a detached perspective view of one form of the cap or fitting used insecuring the paddle on the shaft; Fig. 8 18 a view of a portion'of the paddle showing a showing a. rotary shaft is provided around the o modification in the construction of the cap or fitting therefor, and also illustrating modified means for securing the same to the paddle; and Fig. 9, is a front face'view of the paddle showing a modification in its construction, as well as modified means for securing it .on the shaft.

Like numerals of reference, refer to corresponding parts throughout the different views of the drawing.

The reference numeral 10, designates the trough or mixing receptacle of a mixing machine for mortar and the like, in which is longitudinally journaled for rotation a shaft 11, which in the present instance is shown as being angular in cross section and on which, paddles embodying the invention are mounted in a manner to be presently explained.

Referring now to Figs. 1, to .7, inclusive, of the drawing, the blade tor addle therein shown consists of an'elongatec body 12, having aslot or elongated opening 13, extending from its freev end to about its middle portion. From the inner end of the slot 13, on its front side, the body 12, is provided with an angular reinforcing enlargement 14, which extends to the head 15, of the paddle, which head is formed integrally'therewith, and has 'a recess 16, in its outer surface to receive a portion of the shaft on which the paddle is mounted. This recess is shown as being angular but may be of any desired shape to suit the shaft. The head 15, is provided with laterally disposed extensions 17, each of which is formed with an opening 18, for the reception of the ends of a U-bolt 19, which, in connection with a cap 20, is used in securing the paddle on the shaft 11, as will be readily understood by reference to Fig. 1, of the drawing.

By reference to Figs. 2, 3, and 5, it will be seen and understood that the angular enlargement 14, on the body 12, presents its apex21, in the direction of the travel of the paddle, and that said enlargement tapers toward the slot 13, in the body. On one side of the. slot- 13, the body 12, is provided with a flange 22, which is deflected from the body or in other words, is disposed at an angle thereto and constitutes the front face of the body,and as shown, is widened toward its free end. One side of the body 12, ening13, therein, with a thickened or rein orcing portion 28, part .oi" which extends along the inner por- Patented Aug. 16, 1910. i

tion of the flange 22, and terminates at the head 15, as is clearly shown in Fig. 4, of the drawing. The cap or fitting 20, is provided on its inner surface with a recess 24:, which, in'the present instance, is shown as being angular, but which may be of any suitable shape to correspond with the shaft on which the paddle is mounted. .The outer surface of the cap 20, is formed with a groove 25, to receive the U-bolt 19, the ends of which are inserted through the openings 18, of the extensions 17, and there secured by means of nuts 26, of the ordinary construction.

Instead of using the cap of the construction shown in Fig. 7, and above described, one, 20 of the construction shown in Fig. 8, may be used in which the groove on the outer surface of the fitting is omitted and said fitting or cap is provided with-lateral extensions 27 through suitable openings in which, bolts 28, may be passed to secure it to the head 15, which is of the same construction as above set forth.

In Fig. 9, of the drawing, is shown another modification in the construction of the paddle, as well as in themanner of securing the cap thereto. In this modification, the body 12, of the paddle is provided with a head 15*,

which is longitudinally disposed with respect to the paddle, and has a recess 16 to receive a portion of the shaft. The outer end of the head 15*, is provided with an apert-ured extension 29, and near the juncture of the head with the bod thelatter is provided with an opening. ecured to the head 15 by means of bolts and nuts 28, is a cap 20", of about the same construction shown in Fig. 8, and above described.

From the foregoing and by reference to the drawing, it will be readily understood and clearly'seen, that paddles constructed according to my improvements, can be read ily secured in place on the shaft 11, of the machine, in such a manner that they will ofierno interference to each other, and as the caps which are used in connection with the paddles are detachable, the latter may be secured in place on the shaft without removing the same from its bearings. When in position for operation, as shown in Figs. 1, and 2, of the drawings, it is evident that, as the shaft rotates, the paddles will turn therewith and that as they pass through the batch of material, the same will be thoroughly mixed by reason of the peculiar construction of the paddles and at the same time, will be advanced toward the outlet end of the mixing receptacle or trough. The flanges 22, of each paddle, in the rotation of the series of paddles, will act to force the material forwardly so that it will come in contact with the adjacent paddle in front thereof, and some of the material will pass through the opening or slot therein, while the position of other parts of the material will be changed bythe action of the body and angular enlargement 14, thereon to the end, that a most thorou h commingling of the lngredients will be e ected.

Having thus fully described my inventidiag what I claim as new and desire to secure by Letters-Patent is 1. A blade consisting of a body having a longitudinally disposed flange on its front edge, said flange being deflected from the plane of the body and widened toward its free end, and means at its other end to secure the blade to a shaft.

2. A blade consisting of a body having a longitudinally disposed slot near one of its ends and at its other end a recessed head provided -with apertures, a longitudinally dis osed flange on the front edge of the b0 y, said flange being deflected from the plane of the body and widened toward its free end, a cap to fit 'on the head and having a recess to register with that of the latter, and means to secure the cap and head together.

J USTUS LAUN.

Witnesses:

J. E..HANSEN, CHAs. O. TILLMAN. 

